rust/src/test/ui/where-clauses/where-lifetime-resolution.stderr
Esteban Küber 6ba08755df When encountering an undefined named lifetime, point to where it can be
This doesn't mention that using an existing lifetime is possible, but
that would hopefully be clear as always being an option. The intention
of this is to teach newcomers what the lifetime syntax is.
2020-01-19 17:31:33 -08:00

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error[E0261]: use of undeclared lifetime name `'a`
--> $DIR/where-lifetime-resolution.rs:6:38
|
LL | fn f() where
| - help: consider introducing lifetime `'a` here: `<'a>`
LL | for<'a> dyn Trait1<'a>: Trait1<'a>, // OK
LL | (dyn for<'a> Trait1<'a>): Trait1<'a>,
| ^^ undeclared lifetime
error[E0316]: nested quantification of lifetimes
--> $DIR/where-lifetime-resolution.rs:8:17
|
LL | for<'a> dyn for<'b> Trait2<'a, 'b>: Trait2<'a, 'b>,
| ^^^^^^^^^^^^^^^^^^^^^^
error[E0261]: use of undeclared lifetime name `'b`
--> $DIR/where-lifetime-resolution.rs:8:52
|
LL | fn f() where
| - help: consider introducing lifetime `'b` here: `<'b>`
...
LL | for<'a> dyn for<'b> Trait2<'a, 'b>: Trait2<'a, 'b>,
| ^^ undeclared lifetime
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0261`.